Australopithecus anamensis is the earliest-known species in the genus Australopithecus. The species is widely accepted as the ancestor of Lucy’s species, Australopithecus afarensis, and was previously only known through teeth and jaw fragments, all dated to between 4.2 and 3.9 million years ago. Now, an international team of paleoanthropologists has discovered a well-preserved skull of Australopithecus anamensis in Ethiopia. Due to the skull’s...